Rate Performance of LiCoO<sub>2</sub> Half-cells Using Highly Concentrated Lithium Bis(fluorosulfonyl)amide Electrolytes and Their Relevance to Transport Properties
نویسندگان
چکیده
For the rapid charge-discharge performance of Li-ion batteries (LIBs), ionic conductivity (?) and Li ion transference number (t+) are important parameters electrolytes. Electrolytes with high t+ alleviate concentration polarization upon fast charge-discharge, prevent diffusion-limited mass transfer Li+ ions. Recent studies have suggested that certain highly concentrated electrolytes exhibit better rate performances than conventional organic despite their lower ?. However, relationship between transport properties (t+ ?) enhanced LIBs is yet to be elucidated. To evaluate in terms properties, we investigated discharge capability LiCoO2 (LCO) half-cells using lithium bis(fluorosulfonyl)amide (Li[FSA]) electrolyte ?-butyrolactone (GBL), acetonitrile (AN), dimethyl carbonate (DMC), 1,2-dimethoxyethane (DME) solvents. There was a remarkable solvent dependence t+, highest tLi+current 0.67 observed for GBL-based measured very-low-frequency impedance spectroscopy (VLF–IS) method. The LCO half-cell delivered higher capacities cells DMC- DME-based at current densities. improved attributable derived from tLi+current. We demonstrated importance on high-rate battery performance.
منابع مشابه
architecture and engineering of nanoscale sculptured thin films and determination of their properties
چکیده ندارد.
15 صفحه اولPerformance and Degradation of A Lithium-Bromine Rechargeable Fuel Cell Using Highly Concentrated Catholytes
Lithium-air batteries have been considered as ultimate solutions for the power source of long-range electrified transportation, but state-of-the-art prototypes still suffer from short cycle life, low efficiency and poor power output. Here, a lithium-bromine rechargeable fuel cell using highly concentrated bromine catholytes is demonstrated with comparable specific energy, improved power density...
متن کاملTransport Properties of Polysulfide Species in Lithium–Sulfur Battery Electrolytes: Coupling of Experiment and Theory
A comprehensive experimental and theoretical analysis of the isothermal transport of species for the two model ternary-electrolytes with LiTFSI-Li2S4/dioxolane (DOL)-dimethoxyethane (DME) and LiTFSI-Li2S6/DOL-DME formulations is presented. An unambiguous picture of the polysulfide's mobility is set forth after a detailed investigation of the macroscopic transference number and diffusion coeffic...
متن کاملthe relationship between learners critical thinking ability and their performance in the reading sections of the tofel and ielts test
the study reflected in this thesis aims at finding out relationships between critical thinking (ct), and the reading sections of tofel and ielts tests. the study tries to find any relationships between the ct ability of students and their performance on reading tests of tofel and academic ielts. however, no research has ever been conducted to investigate the relationship between ct and the read...
15 صفحه اولLithium-based antioxidants: electrochemical properties and influence on immune cells
Introduction: Lithium salts are known as effective psychotropic medicine for treatment bipolar disorder and may be used to treat alcoholism, schizoaffective disorders, and cluster headaches. The antioxidant activity and immunomodulatory effects of prospective lithium compounds have been investigated in this work. Materials and Methods: The antioxidant properties were studied by the voltammetry...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Electrochemistry
سال: 2021
ISSN: ['2186-2451', '1344-3542']
DOI: https://doi.org/10.5796/electrochemistry.21-00052